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Date of last update: 8/13/2017.

Forum Name: Urology Topics

Question: CT scan or ultrasound for kidney stones

 JKF - Tue Feb 13, 2007 7:17 pm

Which is the most accurate way of diagnosing a kidney stone- a CT scan or an ultrasound? Thank you. JKF
 Dr. Safaa Mahmoud - Wed Feb 14, 2007 1:54 pm

User avatar Hello,

Non contrast helical CT Scan is the most sensitive up to 100%and specific radiologic test up to 96& (means better definitive diagnosis).

It can give also idea about the presence of obstruction and nongenitourinary conditions.

US has sensitivity of 19% and specificity of 97%. It is a good test, easy, economic and accessible in many centers.

Hope this information is useful.
Best regards.
 JKF - Thu Feb 15, 2007 9:09 am

Thanks. It helps

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